Activation code for my phone

[MichaelFlanders17504]

I have a Cisco IP 8851 on my desk in my office and recently with COVID-19 I have started working from home. That being the case I decided to order a Cisco IP 8851 for my home office. I received the phone and decided to plug it in and get it working today. After plugging it in the welcome screen comes up and asks me to enter an activation code or service domain. Not sure what this is so can anyone help me please? I have Spectrum/Charter service and I have the Ethernet plugged in. I am only looking to use it with the current phone number and with my cell phone and conference calls and webinars

[Ted S]

Assuming your landline provider offers SIP registration, You will most likely need to buy a MMP license and convert the phone which will then allow you to use other providers

https://www.cisco.com/c/en/us/support/docs/smb/collaboration-endpoints/cisco-ip-phone-8800-series/1534-Conversion-enterprise-phone-to-mmp-or-vice-versa.html